Test Lead Engineer

1. Test Strategy & Planning

• Lead the development of comprehensive test strategies, test plans, test approaches and test schedules for AFC and e-payment projects.

• Analyse business, functional, technical, interface and system requirements to determine test scope, coverage and risks.

• Establish end-to-end test coverage and maintain traceability between requirements, test cases, test results and defects.

• Define appropriate testing approaches for:

• Front-end AFC devices

• Embedded software

• Android/mobile applications

• Back-office systems

• APIs and interfaces

• Payment processing

• Database and transaction processing

• Estimate testing effort, resources and timelines and coordinate testing activities to meet project milestones.

• Identify testing risks and recommend appropriate mitigation measures.

1. Hands-on Test Engineering

• Personally design, develop and execute complex test cases and test scenarios.

• Perform functional, integration, system, regression, end-to-end, performance, reliability and stress testing.

• Validate complete transaction flows across reader devices, payment applications, communications networks and back-office systems.

• Develop test data and test conditions covering normal, abnormal, boundary and failure scenarios.

• Conduct exploratory testing to identify defects and system behaviours not covered by scripted test cases.

• Participate directly in system integration, customer acceptance and production verification activities.

1. Test Automation& Engineering

• Design, develop and maintain automated test frameworks and reusable test utilities.

• Identify suitable test scenarios for automationbased on risk, frequency, complexity and expected return on investment.

• Integrate automated tests into CI/CD pipelines.

• Develop automation for UI, mobile, API, databaseand end-to-end transaction testing.

• Maintain test scripts and frameworks to minimisetest flakiness and ensure repeatable results.

• Evaluate and introduce new testing technologies, including AI-assisted testing where appropriate.

• Coach Test Engineers in automation practices and coding standards.

1. AFC & Payment System Testing

• Lead testing of AFC transaction flows involving:

• Contactless smart cards

• CEPAS

• EMV contactless payments

• NFC/mobile wallets

• Reader/validator devices

• Fare gates

• Back-office transactionprocessing

• Clearing and settlement

• Validate transaction integrity, including successful, declined, interrupted, duplicate and failed transactions.

• Test device-to-back-office communication and transaction synchronisation.

• Support testing of card clash/card collision scenarios and other contactless transaction edge cases.

• Analyse transaction logs, device logs, protocol traces and backend records to identify transaction failures.

• Ensure testing adequately covers revenue-impacting scenarios and potential transaction discrepancies.

1. Performance & Reliability Testing

• Plan and execute performance, load, stress and endurance testing.

• Establish performance benchmarks and monitor:

• Transaction response time

• Throughput

• Transaction success rate

• Failure rate

• System resource utilisation

• Network latency

• Device performance

• Analyse performance bottlenecks across device, application, network, middleware, database and backend components.

• Work with development and infrastructure teams to identify and resolve performance issues.

• Conduct reliability and endurance testing for systems operating continuously in public transport environments.

1. Defect Management & Root Cause Analysis

• Lead defect identification, classification, prioritisation and tracking through to closure.

• Conduct defect triage with development, system engineering and project teams.

• Perform technical rootcause analysis for complex defects.

• Analyse logs, stack traces, database records, network traffic and transaction traces to isolate defects.

• Distinguish between application, device, communication, infrastructure, configuration and data-related issues.

• Verify fixes and conduct appropriate regression testing before release.

• Identify recurring defectsand recommend preventive actions.

1. Test Environment & Laboratory Management

• Coordinate and maintain test environments covering devices, applications, databases, network components and supporting systems.

• Work with LTA/customer test laboratories and external testing facilities where required.

• Coordinate test equipment, test cards, mobile devices, simulators, test data and test configurations.

• Ensure test environments are properly configured, controlled and documented.

• Support Factory Acceptance Testing (FAT), System Integration Testing (SIT), User Acceptance Testing (UAT), Site Acceptance Testing (SAT) and other customer acceptance activities.

1. Technical Leadership

• Provide technical guidance and mentoring to Test Engineers and junior engineers.

• Review test plans, testcases, automation scripts and test reports prepared by team members.

• Establish testing standards, coding practices and quality guidelines.

• Lead technical problem-solving sessions involving testing and development teams.

• Promote shift-left testing by identifying defects and testability issues early in the SDLC.

• Remain hands-on in complex testing and troubleshooting activities rather than focusing solely on test administration.

1. Documentation & Reporting

• Prepare and maintain:

• Test Strategy

• Master Test Plan

• Test Specifications

• Test Cases

• Test Scripts

• Automation Framework Documentation

• Test Reports

• Defect Reports

• Performance Test Reports

• Traceability Matrix

• Test Completion/Acceptance Reports

• Prepare testing status reports highlighting progress, risks, defects, quality metrics and outstanding issues.

• Ensure test documentation is maintained throughout the SDLC and complies with project and customer requirements.

1. Stakeholder Management

• Liaise with customers, LTA representatives, project teams, developers, system engineers, vendors and external test laboratories.

• Lead test walkthroughs, defect review meetings, test readiness reviews and test result presentations.

• Explain technical testing issues and risks clearly to both technical and non-technical stakeholders.

• Support customer demonstrations, acceptance activities and production deployment verification.

Requirements

• Bachelor's Degree in Computer Science, Information Technology, Computer Engineering, Software Engineering, Electronics Engineering or a related discipline.

• Professional certification in software testing such as ISTQB is preferred.

• Minimum 8 years of relevant experience in software testing, system testing, test automation or quality engineering.

• At least 3 to 5 years in a Test Lead, Senior Test Engineer, SDET Lead or equivalent technical leadership role.

• Demonstrated experience in both manual and automated testing.

• Experience participating in the complete SDLC from requirements analysis through development, testing, deployment and production support.